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The ST rules allow the use of an OEM fly-by-wire throttle or the conversion of the fly-by-wire to manual. Is there any reason to not allow the use of an alternate throttle of the same size? In some cases it may be a lot easier than trying to convert the stock unit to manual operation. I know...

I have a question that I don't see addressed in the ST rules and I don't recall having been discussed in the forum. If you install an alternate engine, where can it be located in the engine compartment? Other than the paragraph in STO regarding engine setbacks for certain engines, it's...

I've seen some anecdotal evidence that early first generation RX-7 tubs (1979-80) are a bit (50-100 lbs) lighter than the later models. Most of the ITA/7 cars that I've seen that are close to minimum weight (adjusting for differences in driver weight) seem to be based on early tubs. No obvious...

I've been looking to swap the very heavy front pulley/damper on my 200SX with VG30 engine for a light weight aluminum piece. I'm assuming I'd have to make my own since I've never seen commercial version, but that's ok. However, when I see the stock piece - heavy and with a rubber ring...